Ebtech HE-2 2-channel Stereo Hum Eliminator

2-channel AC Hum and Noise Eliminator with 1/4" TRS I/O
Ebtech HE-2 2-channel Stereo Hum Eliminator image 1
Ebtech HE-2 2-channel Stereo Hum Eliminator image 1
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Ebtech HE-2 2-channel Stereo Hum Eliminator
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Get Rid of That Annoying Buzz

Ebtech's HE-2 Hum Eliminator eliminates system noise and ground loops quickly, easily, and above all, safely! Extremely high quality transformers isolate circuits, keeping grounds intact while breaking troublesome loops and balancing unbalanced gear. 1/4" TRS in and out.

  • Eliminates AC hum and noise quickly and easily
  • Automatically converts back and forth between balanced and unbalanced lines
  • Allows using professional equipment for long signal runs free of hum
  • 1/4" TRS "smart jacks" inputs and outputs
  • Safely breaks ground loops while leaving all signal grounds in tact
  • No dangerous ground lifting
  • Automatically translates signal voltages to match differences in ground potentials, avoiding clipping
  • Less than .005% THD @1kHz
  • Crosstalk better than -97dB

Tech Specs

Type Hum Eliminator
Channels 2
Inputs 2 x TRS
Outputs 2 x TRS
Height 2.63"
Depth 3.5"
Width 4.75"
Weight 1.2 lbs.
Manufacturer Part Number HE-2

Customer Reviews

Based on 20 reviews
Write your review

Reamping ground loop eliminated!

I'm using a Line 6 Helix as both my USB audio interface and as a reamp box to record guitar and bass DI tracks directly into my DAW and then have the option to reamp those tracks either digitally all within the Helix or through my collection of real amps and cabs mic'd up. This setup works brilliantly but whenever I used it for my real amps there was a nasty ground loop noise coming through that made high gain reamping unusable. I tried everything I could to solve the issue without buying additional equipment (isolating all equipment into one power conditioned UPS, separating non grounded (2 prong) plugs from the grounded plugs, etc.) and nothing worked. I put the HE-2 in line between the output of the Helix and the input of the amps...problem instantly solved! The passive design that doesn't require any power is a definite bonus as well.
Music background: amateur studio engineer

Hum gone

Worked as described. Removed hum from my Mac based studio.
Music background: Keyboardist

Solved my "Fantom" buzz problem

I recently purchased a Roland Fantom X8 (which has balanced TRS outs) and a Hartke KM200 amp (which has unbalanced inputs) for live gigs. I was getting a slight buzz when my Fantom was connected to the amp. I tried a variety of cables, using a direct box, even lifting the ground on the amp--none of which solved the problem. Then I read about the HE2. I now run TRS from the Fantom to the HE2, and TS from the HE2 to the amp. BUZZ ELIMINATED! It now sounds completely clean, and I believe I even get a bit more gain from keyboard. If you have a similar problem, I recommend this product.
Music background: Professional musician and composer

It does a great job.

I have a small home recording studio set up. I live in an old apartment building from the 70's. I started picking up the dreaded 60 cycle hum. I changed around plugs, and surge protectors. Eliminated 3/4 of the hum, but it was still there. Got the Ebtech, and no more hum of any kind. It works.
Music background: Guitarist

Must have!!!

I purchased this to use with a TC Electronics G System, and some of the high gain amps I use. The line noise is GONE!!!! I'm always skeptical about adding anything in my signal path that can negatively color my tone, and was shocked with the transparency of this device! This is definitely going to be in my bag of tricks for many years!
Music background: Former Pro Guitarist
See also: Direct Input Boxes, Ebtech, Ebtech Direct Boxes